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The role of deformation history on stress relaxation and stress memory of filled rubber (2014)
Journal Article
Fernandes Arruebarrena, V. A., & De Focatiis, D. S. (2014). The role of deformation history on stress relaxation and stress memory of filled rubber. Polymer Testing, 40, https://doi.org/10.1016/j.polymertesting.2014.08.018

Although the magnitudes of inelastic and viscoelastic effects in filled rubbers are small relative to that of the elastic response, these effects are nevertheless critical in applications such as gaskets, seals and dampers. This study investigates th... Read More about The role of deformation history on stress relaxation and stress memory of filled rubber.

Structural optimisation of random discontinuous fibre composites: Part 1 – Methodology (2014)
Journal Article
Qian, C., Harper, L., Turner, T., & Warrior, N. (2015). Structural optimisation of random discontinuous fibre composites: Part 1 – Methodology. Composites Part A: Applied Science and Manufacturing, 68, 406-416. https://doi.org/10.1016/j.compositesa.2014.08.024

This paper presents a finite element model to optimise the fibre architecture of components manufactured from discontinuous fibre composites. An optimality criterion method has been developed to maximise global component stiffness, by determining opt... Read More about Structural optimisation of random discontinuous fibre composites: Part 1 – Methodology.

Discrete element modelling of the packing of spheres and its application to the structure of porous metals made by infiltration of packed beds of NaCl beads (2014)
Journal Article
Langston, P., & Kennedy, A. R. (2014). Discrete element modelling of the packing of spheres and its application to the structure of porous metals made by infiltration of packed beds of NaCl beads. Powder Technology, 268, 210-218. https://doi.org/10.1016/j.powtec.2014.08.018

A numerical model, using the discrete element method, has been developed to quantify specific parameters that are pertinent to the packing behaviour of relatively large, spherical NaCl beads and mixtures of beads of different sizes. These parameters... Read More about Discrete element modelling of the packing of spheres and its application to the structure of porous metals made by infiltration of packed beds of NaCl beads.

The local environment of Dy3+in selenium-rich chalcogenide glasses (2014)
Journal Article
Barney, E. R., Tang, Z., Seddon, A., Furniss, D., Sujecki, S., Benson, T. M., …Gianolio, D. (in press). The local environment of Dy3+in selenium-rich chalcogenide glasses. RSC Advances, 4(80), https://doi.org/10.1039/C4RA07192A

The environment of Dy3+ is investigated when it is added as DyCl3 or Dy foil into two base glasses, Ge16.5As19−xGaxSe64.5, where x = 3 or 10 at%, at doping levels between 0 and 3000 parts per million by weight (ppmw) Dy3+. Extended X-ray Absorption F... Read More about The local environment of Dy3+in selenium-rich chalcogenide glasses.

Effect of the build orientation on the mechanical properties and fracture modes of SLM Ti–6Al–4V (2014)
Journal Article
Simonelli, M., Tse, Y., & Tuck, C. (2014). Effect of the build orientation on the mechanical properties and fracture modes of SLM Ti–6Al–4V. Materials Science and Engineering: A, 616, https://doi.org/10.1016/j.msea.2014.07.086

Recent research on the additive manufacturing (AM) of Ti alloys has shown that the mechanical properties of the parts are affected by the characteristic microstructure that originates from the AM process. To understand the effect of the microstructur... Read More about Effect of the build orientation on the mechanical properties and fracture modes of SLM Ti–6Al–4V.

An experimental study into the effects of bulk and flow behaviour of laser sintering polymer powders on resulting part properties (2014)
Journal Article
Ziegelmeier, S., Christou, P., Wöllecke, F., Tuck, C., Goodridge, R. D., Hague, R. J., …Wintermantel, E. (2015). An experimental study into the effects of bulk and flow behaviour of laser sintering polymer powders on resulting part properties. Journal of Materials Processing Technology, 215, https://doi.org/10.1016/j.jmatprotec.2014.07.029

The properties of parts manufactured by laser sintering (LS) are, amongst others, influenced by the packing and flow efficiencies of the powders being processed. In particular, this study investigated the influence of the bulk and flow characteris... Read More about An experimental study into the effects of bulk and flow behaviour of laser sintering polymer powders on resulting part properties.

Fullerene-free organic solar cells with an efficiency of 3.7% based on a low-cost geometrically planar perylene diimide monomer (2014)
Journal Article
Singh, R., Aluicio-Sarduy, E., Kan, Z., Ye, T., MacKenzie, R., & Keivanidis, P. (2014). Fullerene-free organic solar cells with an efficiency of 3.7% based on a low-cost geometrically planar perylene diimide monomer. Journal of Materials Chemistry A, 2(35), 14348-14353. https://doi.org/10.1039/c4ta02851a

The aggregate-induced limitation for high power-conversion efficiencies (PCEs) of perylene-diimide (PDI): polymer solar cells can be circumvented when two simple rules are respected; the aggregate size of PDI remains short enough and the omnipresent... Read More about Fullerene-free organic solar cells with an efficiency of 3.7% based on a low-cost geometrically planar perylene diimide monomer.

Optimization of piezoelectric cantilever energy harvesters including non-linear effects (2014)
Journal Article
Patel, R., McWilliam, S., & Popov, A. (2014). Optimization of piezoelectric cantilever energy harvesters including non-linear effects. Smart Materials and Structures, 23(8), Article 085002. https://doi.org/10.1088/0964-1726/23/8/085002

This paper proposes a versatile non-linear model for predicting piezoelectric energy harvester performance. The presented model includes (i) material non-linearity, for both substrate and piezoelectric layers, and (ii) geometric non-linearity incorpo... Read More about Optimization of piezoelectric cantilever energy harvesters including non-linear effects.

An alternative non-vacuum and low cost ESAVD method for the deposition of Cu(In,Ga)Se2 absorber layers (2014)
Journal Article
Wang, M., Hou, X., Liu, J., Choy, K., Gibson, P., Salem, E., …Cranton, W. (2015). An alternative non-vacuum and low cost ESAVD method for the deposition of Cu(In,Ga)Se2 absorber layers. Physica Status Solidi a Applied Research, 212, https://doi.org/10.1002/pssa.201431295

In this article, an environmentally friendly and non vacuum electrostatic spray assisted vapour deposition (ESAVD) process has been developed as an alternative and low cost method to deposit CIGS absorber layers. ESAVD is a non-vacuum chemical vapour... Read More about An alternative non-vacuum and low cost ESAVD method for the deposition of Cu(In,Ga)Se2 absorber layers.

Effect of specimen history on structure and in-plane permeability of woven fabrics (2014)
Journal Article
Endruweit, A., Zeng, X., & Long, A. C. (2015). Effect of specimen history on structure and in-plane permeability of woven fabrics. Journal of Composite Materials, 49(13), https://doi.org/10.1177/0021998314536070

Before being processed into composites, reinforcement fabrics may undergo repeated involuntary deformation, the complete sequence of which is here referred to as specimen history. To mimic its effect, fabric specimens were subjected to sequences of d... Read More about Effect of specimen history on structure and in-plane permeability of woven fabrics.

Analysis of filament arrangements and generation of statistically equivalent composite micro-structures (2014)
Journal Article
Gommer, F., Endruweit, A., & Long, A. C. (2014). Analysis of filament arrangements and generation of statistically equivalent composite micro-structures. Composites Science and Technology, 99, https://doi.org/10.1016/j.compscitech.2014.05.008

An efficient method to describe and quantify the filament arrangement in fibre bundles based on the analysis of micrographs was developed. Quantitative measurement of relative filament positions indicated that the initially random arrangement of fila... Read More about Analysis of filament arrangements and generation of statistically equivalent composite micro-structures.

Mechanism investigation of friction-related effects in single point incremental forming using a developed oblique roller-ball tool (2014)
Journal Article
Lu, B., Fang, Y., Xu, D., Chen, J., Ou, H., Moser, N., & Cao, J. (2014). Mechanism investigation of friction-related effects in single point incremental forming using a developed oblique roller-ball tool. International Journal of Machine Tools and Manufacture, 85, 14-29. https://doi.org/10.1016/j.ijmachtools.2014.04.007

Single point incremental forming (SPIF) is a highly versatile and flexible process for rapid manufacturing of complex sheet metal parts. In the SPIF process, a ball nose tool moves along a predefined tool path to form the sheet to desired shapes. Due... Read More about Mechanism investigation of friction-related effects in single point incremental forming using a developed oblique roller-ball tool.

An error diffusion based method to generate functionally graded cellular structures (2014)
Journal Article
Brackett, D., Ashcroft, I., Wildman, R., & Hague, R. J. (2014). An error diffusion based method to generate functionally graded cellular structures. Computers and Structures, 138, https://doi.org/10.1016/j.compstruc.2014.03.004

The spatial variation of cell size in a functionally graded cellular structure is achieved using error diffusion to convert a continuous tone image into binary form. Effects of two control parameters, greyscale value and resolution on the resulting c... Read More about An error diffusion based method to generate functionally graded cellular structures.

Cyclic viscoplasticity testing and modeling of a service-aged P91 steel (2014)
Journal Article
Hyde, C. J., Sun, W., Hyde, T., Rouse, J., Farragher, T., O'Dowd, N. P., & Leen, S. (2014). Cyclic viscoplasticity testing and modeling of a service-aged P91 steel. Journal of Pressure Vessel Technology, 136(4), Article 044501. https://doi.org/10.1115/1.4026865

A service-aged P91 steel was used to perform an experimental program of cyclic mechanical testing in the temperature range of 400 °C–600 °C, under isothermal conditions, using both saw-tooth and dwell (inclusion of a constant strain dwell period at t... Read More about Cyclic viscoplasticity testing and modeling of a service-aged P91 steel.

Drag reduction in turbulent channel flow using bidirectional wavy Lorentz force (2014)
Journal Article
Huang, L., Choi, K., Fan, B., & Chen, Y. (2014). Drag reduction in turbulent channel flow using bidirectional wavy Lorentz force. Science China Physics, Mechanics and Astronomy, 57(11), https://doi.org/10.1007/s11433-014-5416-2

Turbulent control and drag reduction in a channel flow via a bidirectional traveling wave induced by spanwise oscillating Lorentz force have been investigated in the paper. The results based on the direct numerical simulation (DNS) indicate that the... Read More about Drag reduction in turbulent channel flow using bidirectional wavy Lorentz force.

A novel nethod of extraction of blend component structure from SANS measurements of homopolymer bimodal blends (2014)
Journal Article
Smerdova, O., Graham, R. S., Gasser, U., Hutchings, L. R., & De Focatiis, D. S. (2014). A novel nethod of extraction of blend component structure from SANS measurements of homopolymer bimodal blends. Macromolecular Chemistry and Physics, 215(9), https://doi.org/10.1002/macp.201300787

A new method is presented for the extraction of single chain form factors and inter-chain interference functions from a range of small angle neutron scattering (SANS) experiments on bimodal homopolymer blends. The method requires a minimum of three b... Read More about A novel nethod of extraction of blend component structure from SANS measurements of homopolymer bimodal blends.

Combined hydrogels that switch human pluripotent stem cells from self-renewal to differentiation (2014)
Journal Article
Dixon, J. E., Shah, D. A., Rogers, C., Hall, S., Weston, N., Parmenter, C. D., …Shakesheff, K. M. (2014). Combined hydrogels that switch human pluripotent stem cells from self-renewal to differentiation. Proceedings of the National Academy of Sciences, 111(15), 5580-5585. https://doi.org/10.1073/pnas.1319685111

The ability of materials to define the architecture and microenvironment experienced by cells provides new opportunities to direct the fate of human pluripotent stem cells (HPSCs) [Robinton DA, Daley GQ (2012) Nature 481(7381):295-305]. However, the... Read More about Combined hydrogels that switch human pluripotent stem cells from self-renewal to differentiation.

Residual stresses in environmental and thermal barrier coatings on curved superalloy substrates: experimental measurements and modelling (2014)
Journal Article
Liu, D., Kyaw, S., Flewitt, P., Seraffon, M., Simms, N., Pavier, M., & Jones, I. (2014). Residual stresses in environmental and thermal barrier coatings on curved superalloy substrates: experimental measurements and modelling. Materials Science and Engineering: A, 606, https://doi.org/10.1016/j.msea.2014.03.014

Residual stresses within thermal barrier coated (TBC) systems are predicted using finite element models and are compared against experimental measurements taken using Raman and photo-stimulated luminescence piezo-spectroscopic methods. Two types of s... Read More about Residual stresses in environmental and thermal barrier coatings on curved superalloy substrates: experimental measurements and modelling.